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Yes, the code is open source: https://gitlab.com/engrave/dblog

As I said, I have plans to rewrite it as HAF app to make it a bit better in terms of decentralization. I believe it's too reliant on the backend database right now and most activities could be stored in the chain.

Thanks mate, I’ll have a browse, sounds like HAF is going to simplify the process of developing apps for hive.

Definitely